The standard cell potential (E°cell) for the voltaic cell based on the reaction below is ________ V.?
The standard cell potential (E°cell) for the voltaic cell based on the reaction below is ________ V.
Cr (s) + 3Fe3+ (aq) → 3Fe2+ (aq) + Cr3+ (aq)
A) -1.45
B) +2.99
C) +1.51
D) +3.05
E) +1.57
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Reduction: Fe3+ + e- -> Fe2+..... Eo = 0.77
Oxidation: Cr -> Cr+3 + 3e- ...... Eo = 0.74
0.77 + 0.74 = 1.51 volts